Electronics Repair (sci.electronics.repair) Discussion of repairing electronic equipment. Topics include requests for assistance, where to obtain servicing information and parts, techniques for diagnosis and repair, and annecdotes about success, failures and problems.

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Default Peavey XRD680TB

Unit came in completely dead.

Read that others had to replace all output transistors, driver transistors and
bias diodes.

Other cures?


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Default Peavey XRD680TB

On Tuesday, May 14, 2019 at 7:37:05 PM UTC-4, Darryl Widman wrote:
Unit came in completely dead.

Read that others had to replace all output transistors, driver transistors and
bias diodes.

Other cures?


--


check the devices with an ohm meter
check the emitter ballast resistors for opens with an ohm meter
use the variac or series light-bulb method when you turn it on again
m
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